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# Functions used for interactive installation of new changes to running system
# vim: ft=sh
dodiff() {
if [ -d "$2" ]; then
# If we just copying some file to directory
OUT=$2/$(basename "$1")
else
OUT=$2
fi
if ! [ -f "$OUT" ]; then
echo "Not installed: $1 => $OUT"
read -p "Install? (Y/n) "
if [[ $REPLY =~ ^[Yy]?$ ]]; then
doinst "$1" "$OUT"
fi
return
fi
if cmp "$1" "$OUT" >/dev/null; then
echo "No difference detected: $OUT"
return
fi
vimdiff "$1" "$OUT"
}
checkdiff() {
# Iterate trough source directory but ignore any git repositories
# Note that it's design decision to not iterate trough target directory.
if [ -d "$1" ]; then
# This is check if we have correct inst command basically. If it is
# directory than it have to have trailing slash to ensure that no
# additional directory is created.
if ! echo "$1" | grep -qE '/$'; then
echo ERROR: Directory without trailing slash detected: $1
exit 1
fi
# Got trough all files ignoring git repositories
for f in `find "$1" \( -type d -exec test -e '{}'/.git \; \) -prune -o -type f -print`; do
F="${f#$1}"
dodiff "$1/$F" "$2/$F"
done
# Check if we have all directories ignoring those in git repositories
for d in `find "$1" -type d -print -exec test -e '{}'/.git \; -prune`; do
D="${d#$1}"
if [ ! -d "$2/$D" ]; then
echo "Directory not installed: $1/$D => $2/$D"
read -p "Install? (Y/n) "
if [[ $REPLY =~ ^[Yy]?$ ]]; then
doinst "$1/$D/" "$2/$D"
fi
fi
done
# Now checkout git repositories
for g in `find "$1" -type d -exec test -e '{}'/.git \; -print -prune`; do
G="${g#$1}"
PREV="$(pwd)"
cd "$2/$G"
# Check if we have any change at all
if git --work-tree=. diff --exit-code -s; then
echo "No difference detected in git: $2/$G"
else
echo "Checkout of git repository: $2/$G"
# Checkout all files to HEAD
git --work-tree=. checkout -f HEAD
# Update all submodules
git --work-tree=. submodule update
fi
cd "$PREV"
done
else
dodiff "$1" "$2"
fi
}
# Managing two git trees with master has small inconvenience that git allows only
# single branch checkout in all work trees, so as it sets now git will execute all
# commands not on deployed tree but on tree in this repository, so we need specify
# work tree on command line every time we want target deployed work tree.
doinst() {
echo rsync -rlpt $1 $2
rsync -rlpt $1 $2
# Now edit all .git files in target directory
for g in `find "$2" -name '.git' -type f`; do
if ! grep -q "gitdir: " "$g"; then
continue # Probably not a git repository or who knows.
fi
echo "Pointing git repository $g to this repository"
echo gitdir: $PWD/.git`sed "s/^gitdir: [./]*git//" "$g"` > "$g"
done
}
inst() {
if [ -e "$2" ]; then
# If output exists, execute diff instead
checkdiff $1 $2
return
fi
doinst $1 $2
}
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